FläktGroup EQRB User manual

FläktGroup DC_9108GB 20190206_R1Specifications are subject to alteration without notice
ROTARY HEAT EXCHANGER
EQRB
INSTALLATION AND MAINTENANCE INSTRUCTIONS
IMPORTANT!
During installation
– Read the instruction manual completely
before installation and commissioning.
– The installation must be carried out by
qualified personnel.
– General conditions and regulations for
the installation and operation of electrical
machinery must be observed.
– Measures to protect against personal in-jury
and damage to the machine must be taken
following local rules and regulations
– The EMX-R drive system is intended for
permanent installation.
– Cables must not be connected or
disconnected while the supply voltage is on.
– Check that the equipment is correctly
connected before it is taken into use.
See the instructions for mounting/
connection.
– Faults that arise due to faulty installation or
operation are not covered by the guarantee.
During operation
– Measurement in the control unit during
operation may only take place at the
connection terminalblocks.
N.B.! Great care must be taken.
– The units may not be opened or
disassembled while they are operating.
Regarding the control logic and operation:
During start up and after each time the AHU
has been stopped, it is recommended that the
exhaust fan operates during 1 minute before the
supply fan is started.
SAFETY INSTRUCTIONS
INSTALLATIONS INSTRUCTION, DRIVE SYSTEM
EMX-R, EQRB SIZE 020-090

2
Installation- and maintenance instruction
FläktGroup DC_9108GB 20190206_R1Specifications are subject to alteration without notice
CONNECTION OF THE POWER SUPPLY AND
CONTROL SIGNAL
0-20 mA
POWER SUPPLY
The power supply is connected to L, N and earth.
Supply voltage: 230 VAC ±15%, 50/60 Hz.
CONTROL SIGNAL
The control signal is connected to terminals 33 and 34.
The various control signals are set by means of the DIP switches.
POWER
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
0-10 V (10kOhm) 2-10 V
0-20 V fassnitt 4-20 mA
The drive system can be controlled manually at 0–10 V by means of a 10
kOhm potentiometer connected as shown in the figure.
Control unit
33
34
37
10 kOhm
10-F11
Model S and E Alarm relay 42-43
Closed on alarm
Cooling energy recovery
Priority switch
Control signal
Rotation
sensor
Safety
switch
Cooling energy recovery
51-52 Outdoor air sensor
51-53 Extract air sensor
Analogue
output-signal
0-10V/20mA
Potentio-
meter-
control
Extra circuit card in model E
Concerns variants
EMX-R-25 1,3 A eQ 020 – 053, 063,072
EMX-R-35 1,7 A eQ 056, 068, 079, 090
WARNING!
Do not install any switch between the motor
and the control unit.
Residual voltage remains for 1 minute after
disconnection of the supply voltage.
The test switch and DIP switches may only be
adjusted after disconnecting the supply voltage.

3
Installation- and maintenance instruction
FläktGroup DC_9108GB 20190206_R1Specifications are subject to alteration without notice
ACTIVATING OTHER FUNCTIONS
PRIORITY SWITCH / DEFROSTING /
MANUAL CONTROL
When terminal 34 is connected to terminal 35, the speed of rotation is
determined by the priority poten-tiometer, which is located next to the
DIPswitches in the control unit.
The priority switch has higher priority than the summer/winter switch
(only available on Model E) and the control signal.
ALARM OUTPUT
The alarm output is a changeover contact, max 5 A 230 VAC.
SELECTION OF MAX SPEED
Maximal speed can be limited to 80% (200 rpm) or 60% (150 rpm). This
function is intended to be used especially for rotors smaller than ca 1.3
m, when it is desirable to maximize the revolution and/or when using
larger belt pulleys.
PARALLEL CONNECTION
If several rotary heat exchangers are to be operated in parallel using one
control signal or sensor, each heat exchanger rotor must be equipped
with its own drive system (motor and control unit).
The control signal cable is connected to the first drive system according
to the instructions for connection. The other control units are connected
by connecting terminals 33 and 34 of the other control units to terminals
33 and 34, respectively, on the first control unit. The DIP switches on
the first control unit are set as described in ”Setting the DIPswitches”.
DIPswitch 1 and DIPswitch 3 on the other control units are to be set as
described in “Setting the DIPswitches”, while DIP switch 2 is always set
as illustrated below:
TEST SWITCH
When test switch is in the ”ON” position, the motor soft starts and the
speed increases to the maximum, independently of other signal sources.
When in the ”OFF” position (down) the test switch is not operational.
No Designation
1Mains terminal
2Motor terminal
3Priority potentiometer
4Control signal terminal
5DIP switch
6Test switch
7Alarm terminal
8Drive indication in model S, two LEDs
8
12 3 4 5 6 7
10-F05
Extra circuit
card in
model E
with LED
display,
E-terminal
51-58 and
jumper J1
ON
10-F05
ON
ON
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
100% 80% 60%
ON
2
TIP!
The test switch can also be used to run the
motor at maximum speed if, for example, an
external control signal is not available.

4
Installation- and maintenance instruction
FläktGroup DC_9108GB 20190206_R1Specifications are subject to alteration without notice
The control units initiate individual alarms. The alarm outputs can
be connected in parallel or in series in order to obtain a collective
alarm.
Model E can also use the analogue output signal in order to control
other drive systems. Terminals 54(-) and 55(+) are connected to
terminals 34(-) and 33(+), respectively. The DIPswitches on all
control units are set as described in ”Setting the DIPswitches”.
SPEED CONTROLLER
If a faster and stiffer controller intended for use with stiff belts is
used, the DIPswitch 5 should be set to ”On”. If a smoother controller
intended for other belts is used, the DIPswitch should be set to
”OFF”.
If the stiffer controller is not adequate for smooth oper-ation when
the max speed is set to 100%, an even stiffer and faster controller
can be selected by setting DIP switches 5 and 7 ”ON” and setting
DIPswitch 8 ”OFF”.
ROTATION MONITOR
The rotation on the motor is monitored with RotoSens by
measurement of the motor load.
For operations without the rotation monitor with sensor or the
RotoSens rotation monitor, set DIP switch 4 to ”OFF” and fit a jumper
between terminals 31 and 32.
DIRECTION OF ROTATION
HEAT RECOVERY ON COOLING RECOVERY,
SUMMER/WINTER SWITCH
Cooling energy recovery is most simply obtained by using an
external regulator which has this function
Cooling energy recovery is most simply obtained by using an
external regulator which has this function built-in. the EMX-R is then
controlled by a control signal, e.g. 0-10 V.
If, for example, an external controller is already installed, you can
obtain the cooling energy recovery function by directly connecting a
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
V-belt
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
Other belts
ON
7
8
5
Counter clockwise
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
Clockwise
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
Rotation monitor with sensor
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
RotoSens
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3
ON
4
ON
4
ON
ON
7 8
7 8
ON
7 8
ON
6
ON
6
ON
5
ON
5
0-10V
10 kΩ
Kilrem
Medurs
100%
80%
60%
Moturs
Plan
rem
2-10V
0-20V
4-20mA
0-20mA
JA
NEJ
Styrsignal Remtyp
Rotationsriktning
Maximalt varvtalRotationsvakt
separate differential thermostat to the EMX-R, terminals 36-37.
Model E has a built-in differential thermostat. This makes it possible to
connect two NTC sensors of resistance 2000 Ohm (EGL511, for instance),
one in the incoming air duct and one in the exhaust air duct, directly to the
EMX-R, terminals 51-53.
ANALOGUE OUTPUTSIGNAL
(available on Model E only)
The output signal, 0–20 mA or 0–10 V is proportional to the speed of the
motor. The maximum value, 20 mA, is always obtained at the selected
max speed (60, 80 or 100% of the motor’s maximum rpm). The choice
between the 0–20 mA output signal and the 0-10 V output signal is made
with jumper J1 positioned behind the control terminals 51–58.
POTENTIOMETER WITH LOW RESISTANCE,
100 OHM - 5 KOHM
(available on Model E only)
When control is provided by a potentiometer with a total resistance
value between 100 Ohm and 5 kOhm, the three leads are connected
to terminals 56-58. DIPswitches 1-3 are set in the same way as for a
control signal of 0-10 V.

5
Installation- and maintenance instruction
FläktGroup DC_9108GB 20190206_R1Specifications are subject to alteration without notice
Purging mode. Low control signal
The speed of the rotor in rpm. At the start, the speed is
displayed according to the rotor/motor gear ratio of 1:25.
After 2 pulses from the rotation monitor, the correct speed of
rotation of the rotor is displayed. Range: 0.2 - 99 rpm
RotoSens is selected using the DIP-switch (4) and with no
rotation sensor connected
Lit for two seconds when the magnet passes the rotation
sensor
RotoSens measures the load on the motor during
acceleration
Summer operation/cooling energy recovery
No rotation monitor - DIP 4 in the OFF position and jumper
31-32
An alarm is indicated by the letter F followed by a number.
See also the section on troubleshooting.
OPERATING INDICATORS / BUILT-IN FUNCTIONS
Two LEDs, one red and one green, are used on the
Model S for indication, while the Model E has an LED
display as follows:
OPERATING INDICATION - MODEL S
AUTOMATIC PURGING MODE / HOLDING TORQUE
When the control signal is low, i.e. <1.5V at 0-10V, the
drive system switches to purging mode. In purging
mode the motor shaft turns two revolutions every 10
minutes, which is equivalent to around 30 degrees of
rotation by the heat exchanger rotor.
It may be the case that the rotor rotates although it
should be stationary. To prevent involuntary heat
recovery a holding torque is activated to keep the rotor
still. If a holding torque has been applied and you
grasp the drive belt and try to turn the rotor by hand,
the torque will progressively increase.
PROTECTION OF THE CONTROL UNIT
The control unit has a built-in motor protection that
protects against overloading, and external motor
protection is not required. Built-in short circuit protec-tion protects
against short circuits between the phases
of the motor and between the phases and earth.
OPERATING INDICATION - MODEL E
Green
Slow flashing – Purging mode/Low control signal.
Rapid flashing – Operation, the motor rotates
continuously.
Lit for two seconds – Magnet passing rotation
sensor.
Lit - RotoSens measures the load on the motor
during acceleration.
Red Lit or flashing LED indicates alarm; see also the
section on troubleshooting.
Protective
function
External alarm
with alarm
relay
Restart Alarm reset
Supply fault,
over-voltage Yes,
immediately Automatic
Automatic
Supply fault,
under-voltage
Pre-alarm,
rotation
monitor
No
Motor not
stopped
Rotation
monitor Yes
RotoSens
-Manual,
disconnect
and reconnect
power supply.
Rotation monitor
with sensor
-automatic.
Pre-alarm,
motor
protection/
overload
No
The system tries
to reset three
times
Automatic
Motor
protection/
overload Yes,
immediately
Manual,
disconnect
and reconnect
power
supply.
Manual,
disconnect
and reconnect
power
supply
Short circuit

6
Installation- and maintenance instruction
FläktGroup DC_9108GB 20190206_R1Specifications are subject to alteration without notice
Alarm indication
Fault condition/Action required
S E Fault
Green LED
flashes slowly
Purging/
low control signal
Check EMX-R by running the drive system with the test switch located next to
terminal 37. The motor should accelerate to its maximum speed.
If the motor does accelerate to the maximum speed when the test switch is
activated, the fault is external. Can 0-10 V (2-10 V) be measured between 33(+) and
34 (-)? Have + and – been swapped?
Red and green
LED flash rapidly
Pre-alarm,
rotation monitor
The drive system has switched to a softer speed controller because the motor shaft
is jerking sharply. Check that the drive belt is not slipping on the pulley.
Red LED
flashes rapidly Rotation monitor
The exchanger rotor is not rotating; check the drive belt.
The rotor is rotating; check that the indication is given when the magnet passes the
rotation sensor, see the section “Operating indicators”. If not, replace the rotation
sensor. Check that the rotor or belt pulley is not smaller than 630 mm or 63 mm
respectively.
Red LED is lit
and green
LED flashes rapidly
Pre-alarm,
overload/
motor protection
The motor protection has been activated due to excessive load. After a cool-down
period of 10 minutes, the system restarts automatically. If the overload protection
trips 3 times within 120 minutes, the drive system will be shut down, see also“
Overload”. (only red LED is lit).
Red LED is lit Overload/
motor protection
The motor protection has been activated due to excessive load. Check that the
motor cables are connected correctly, see the section on Connection.
Check also that the rotor runs freely and that the diameters of the rotor and pulley
are not too large. If the fault remains, carry out motor diagnosis.
Replace the motor if it is faulty. If the fault does not lie within the motor, replace
thecontrol unit.
No LED lit Supply voltage
Missing Check that 230 VAC ±15% is connected to the supply terminal.
Red and green LED
flash slowly and
alternately
Over voltage The supply voltage exceeds 264 V AC
Under voltage The supply voltage is below 196 V AC
Red and green
LED flash rapidly and
alternately
Earth connection in
the motor
Disconnect the supply voltage, check the connection of the motor cable and check
that the correct motor is connected.
If the fault remains, carry out a motor diagnosis. If the motor is faulty, replace it.
If the motor is not faulty, replace the control unit
Red LED
flashes slowly
Short circuit in
the motor.
Circuit break in
the motor
TROUBLESHOOTING
Check that the equipment has been correctly installed, i.e. that the
cables are properly stripped, no loose cables, etc., and check that the
DIPswitches are correctly set.
It is always possible to test run the drive system usingthe TEST switch
located under the cover next to terminal 37. The switch has two fixed
positions, when it is in the up position, the motor accelerates to its
maximum speed independent of the control signal, and when it is in the
down position the rotation speed is controlled by the control signal. If the
motor does no treach maximum speed or respond to the control signal,
check DIPswitches 1-3 and 7 and 8. If the heat exchang-er rotates in the
wrong direction, change the setting of DIPswitch 6.
MOTOR DIAGNOSIS
Disconnect the supply voltage. Disconnect the motor
cables from the control unit.
Measure the motor resistance between 1–2, 3–4 and 5–6.
The values should be: 15M: 30–90 Ohm; 25M: 5–15 Ohm; 35M: 5–15 Ohm
The resistance should not differ by more than 5 Ohm between the phases
for 15M, and by no more than 2 Ohm for 25M/35M.
Also check the insulation resistance between 1–3, 1–5, 3–5, 1-earth,
3–earth and 5–earth.